Delta VFD015B43A

Preface
Thank you for choosing DELTA’s high-performance VFD-B Series. The VFD-B Series is manufactured with
high-quality components and materials and incorporate the latest microprocessor technology available.
This manual is to be used for the installation, parameter setting, troubleshooting, and daily maintenance of the
AC motor drive. To guarantee safe operation of the equipment, read the following safety guidelines before
connecting power to the AC motor drive. Keep this operating manual at hand and distribute to all users for
reference.
To ensure the safety of operators and equipment, only qualified personnel familiar with AC motor drive are to
do installation, start-up and maintenance. Always read this manual thoroughly before using VFD-B series AC
Motor Drive, especially the WARNING, DANGER and CAUTION notes. Failure to comply may result in
personal injury and equipment damage. If you have any questions, please contact your dealer.
PLEASE READ PRIOR TO INSTALLATION FOR SAFETY.
DANGER!
1. AC input power must be disconnected before any wiring to the AC motor drive is made.
2. A charge may still remain in the DC-link capacitors with hazardous voltages, even if the power has been
turned off. To prevent personal injury, please ensure that power has turned off before opening the AC
motor drive and wait ten minutes for the capacitors to discharge to safe voltage levels.
3. Never reassemble internal components or wiring.
4. The AC motor drive may be destroyed beyond repair if incorrect cables are connected to the input/output
terminals. Never connect the AC motor drive output terminals U/T1, V/T2, and W/T3 directly to the AC
mains circuit power supply.
5. Ground the VFD-B using the ground terminal. The grounding method must comply with the laws of the
country where the AC motor drive is to be installed. Refer to the Basic Wiring Diagram.
6. VFD-B series is used only to control variable speed of 3-phase induction motors, NOT for 1-phase motors
or other purpose.
7. VFD-B series shall NOT be used for life support equipment or any life safety situation.

Delta VFD015B43A Specifications

General

Series	VFD-B
Horsepower	2 HP
Power Rating	1.5 kW
Protection Level	IP20
Cooling Method	Fan Cooled
Protection Features	Over-voltage, Over-current, Overload, Overheat, Low-voltage, Short Circuit

Summary

Chapter 2 Installation and Wiring

2.4 Wiring

General information and precautions related to wiring the AC motor drive.

2.4.1 Basic Wiring

Fundamental principles and checks for basic AC motor drive wiring.

2.4.3 Main Terminals Connections

Details on connecting the main power and motor terminals.

2.4.4 Control Terminals

Information on connecting control signals to the drive's terminals.

2.4.5 Main Circuit Terminals

Terminal layout and specifications for the main power circuit connections.

Chapter 3 Start Up

3.1 Preparations before Start-up

Essential checks and preparations to perform before powering on the AC motor drive.

Chapter 4 Digital Keypad Operation

4.2 How to Operate the Digital Keypad VFD-PU01

Step-by-step guide on operating the digital keypad for various functions.

Chapter 5 Parameters

5.1 Summary of Parameter Settings

A comprehensive summary of all available parameters and their default settings.

5.2 Parameter Settings for Applications

5.3 Description of Parameter Settings

Detailed explanations for each parameter, including ranges and functions.

Chapter 6 Fault Code Information

6.1 Common Problems and Solutions

Troubleshooting guide for common fault codes and their corrective actions.

6.2 Reset

Chapter 7 Troubleshooting

7.1 Over Current (OC)

Diagnostic flowchart and solutions for over-current faults.

7.2 Ground Fault

Troubleshooting steps for ground fault errors.

7.3 Over Voltage (OV)

Diagnostic steps and solutions for over-voltage conditions.

7.4 Low Voltage (Lv)

Troubleshooting guide for low-voltage faults.

7.5 Over Heat (OH)

Steps to diagnose and resolve overheating issues.

7.6 Overload

Troubleshooting procedures for overload conditions.

7.7 Display of PU01 is Abnormal

7.8 Phase Loss (PHL)

7.9 Motor cannot Run

Diagnostic flowchart for when the motor fails to run.

7.10 Motor Speed cannot be Changed

Troubleshooting steps when motor speed is not adjustable.

7.11 Motor Stalls during Acceleration

Diagnostic steps for motor stalling during acceleration.

7.12 The Motor does not Run as Expected

Troubleshooting for situations where the motor performance is not as expected.

Chapter 8 Maintenance and Inspections

Appendix C How to Select the Right AC Motor Drive

C.1 Capacity Formulas

2.3 When it is running continuously

C.2 General Precaution

C.3 How to Choose a Suitable Motor

Guidance on selecting the appropriate motor for AC motor drive applications.

Motor torque